jiazhizhong/spring-boot-base-demo
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fix(security): 修复RSA加密工具类中的Base64编码问题

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- 替换Base64编码方法从getUrlEncoder到encodeBase64URLSafeString
- 替换Base64解码方法从getUrlDecoder到decodeBase64URLSafe
- 更新公钥和私钥的编码方式以确保兼容性
- 修改rsaSplitCodec方法中的资源管理避免内存泄漏
- 启用并修复main方法中的测试代码验证加密解密功能
This commit is contained in:
海言
2026-06-01 14:30:10 +08:00
parent 39df5c5945
commit 8af32e42a0
1 changed files with 30 additions and 24 deletions
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54
src/main/java/cn/xf/basedemo/common/utils/RSAUtils.java
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@@ -1,5 +1,8 @@
package cn.xf.basedemo.common.utils;
import org.apache.tomcat.util.codec.binary.Base64;
import org.apache.tomcat.util.http.fileupload.IOUtils;
import javax.crypto.Cipher;
import java.io.ByteArrayOutputStream;
import java.security.*;
@@ -18,7 +21,7 @@ import java.util.Map;
* @description: 加密工具类
* @author: xiongfeng
* @create: 2022-06-20 10:37
* **/
**/
public class RSAUtils {
//算法类型
@@ -47,10 +50,10 @@ public class RSAUtils {
kpg.initialize(ENCRYPT_SIZE);
KeyPair keyPair = kpg.generateKeyPair();
PublicKey aPublic = keyPair.getPublic();
String publicKey = Base64.getUrlEncoder().withoutPadding().encodeToString(aPublic.getEncoded());
String publicKey = Base64.encodeBase64URLSafeString(aPublic.getEncoded());
PrivateKey aPrivate = keyPair.getPrivate();
String privateKey = Base64.getUrlEncoder().withoutPadding().encodeToString(aPrivate.getEncoded());
String privateKey = Base64.encodeBase64URLSafeString(aPrivate.getEncoded());
Map<String, String> map = new HashMap<>();
@@ -71,7 +74,7 @@ public class RSAUtils {
public static RSAPublicKey getPublicKey(String publicKeyStr) throws NoSuchAlgorithmException, InvalidKeySpecException {
// 通过X509编码的Key指令获得公钥对象
KeyFactory keyFactory = KeyFactory.getInstance(RSA);
X509EncodedKeySpec x509KeySpec = new X509EncodedKeySpec(Base64.getUrlDecoder().decode(publicKeyStr));
X509EncodedKeySpec x509KeySpec = new X509EncodedKeySpec(Base64.decodeBase64URLSafe(publicKeyStr));
RSAPublicKey key = (RSAPublicKey) keyFactory.generatePublic(x509KeySpec);
return key;
}
@@ -87,7 +90,7 @@ public class RSAUtils {
public static RSAPrivateKey getPrivateKey(String privateKeyStr) throws NoSuchAlgorithmException, InvalidKeySpecException {
KeyFactory keyFactory = KeyFactory.getInstance(RSA);
PKCS8EncodedKeySpec pkcs8EncodedKeySpec = new PKCS8EncodedKeySpec(Base64.getUrlDecoder().decode(privateKeyStr));
PKCS8EncodedKeySpec pkcs8EncodedKeySpec = new PKCS8EncodedKeySpec(Base64.decodeBase64URLSafe(privateKeyStr));
RSAPrivateKey privateKey = (RSAPrivateKey) keyFactory.generatePrivate(pkcs8EncodedKeySpec);
return privateKey;
}
@@ -107,7 +110,8 @@ public class RSAUtils {
cipher.init(Cipher.ENCRYPT_MODE, publicKey);
byte[] bytes = cipher.doFinal(data.getBytes());
return Base64.getUrlEncoder().withoutPadding().encodeToString(bytes);
return Base64.encodeBase64URLSafeString(bytes);
// return Base64.encodeBase64URLSafeString(rsaSplitCodec(cipher, Cipher.ENCRYPT_MODE, data.getBytes(CHARSET), publicKey.getModulus().bitLength()));
} catch (Exception e) {
throw new RuntimeException();
}
@@ -118,7 +122,9 @@ public class RSAUtils {
Cipher cipher = Cipher.getInstance(RSA);
cipher.init(Cipher.DECRYPT_MODE, privateKey);
return new String(rsaSplitCodec(cipher, Cipher.DECRYPT_MODE, Base64.getUrlDecoder().decode(data.getBytes(CHARSET)), privateKey.getModulus().bitLength()), CHARSET);
// byte[] bytes = cipher.doFinal(Base64.decodeBase64(data.getBytes(CHARSET)));
// return new String(bytes);
return new String(rsaSplitCodec(cipher, Cipher.DECRYPT_MODE, Base64.decodeBase64(data.getBytes(CHARSET), 0, data.getBytes(CHARSET).length), privateKey.getModulus().bitLength()), CHARSET);
} catch (Exception e) {
throw new RuntimeException("解密字符串[" + data + "]时遇到异常", e);
}
@@ -132,10 +138,11 @@ public class RSAUtils {
} else {
maxBlock = keySize / 8 - 11;
}
ByteArrayOutputStream out = new ByteArrayOutputStream();
int offSet = 0;
byte[] buff;
int i = 0;
try (ByteArrayOutputStream out = new ByteArrayOutputStream()) {
byte[] buff;
try {
while (datas.length > offSet) {
if (datas.length - offSet > maxBlock) {
//可以调用以下的doFinal（）方法完成加密或解密数据：
@@ -147,33 +154,32 @@ public class RSAUtils {
i++;
offSet = i * maxBlock;
}
return out.toByteArray();
} catch (Exception e) {
throw new RuntimeException("加解密阀值为[" + maxBlock + "]的数据时发生异常", e);
}
byte[] resultDatas = out.toByteArray();
IOUtils.closeQuietly(out);
return resultDatas;
}
public static void main(String[] args) {
// Map<String, String> encryptKey = createEncryptKey();
// String publicKey = encryptKey.get("publicKey");
// String privateKey = encryptKey.get("privateKey");
//
// System.out.println("公匙加密串：" + publicKey);
// System.out.println("私匙加密串：" + privateKey);
//
// System.out.println();
Map<String, String> encryptKey = createEncryptKey();
String publicKey = encryptKey.get("publicKey");
String privateKey = encryptKey.get("privateKey");
System.out.println("公匙加密串：" + publicKey);
System.out.println("私匙加密串：" + privateKey);
System.out.println();
//
String data = "data";
//加密
try {
String s = publicEncrypt(data, getPublicKey("MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC_F5UQC1QWsu3QsESQBz9M-GDA9Atm0qVSvwIsy568lyRLi-nq3VvvnmgrlL4yTbngFzyfb2Dn35cNCHsBvIaGuCY3_PpzPqMzVpxr2QlEkhEX9atnJQ1rWexS8QeZtPjpiIwoQrChTzXjD_sYUkDrqSykFplyivf0NSO2WqCBdwIDAQAB"));
String s = publicEncrypt(data, getPublicKey(publicKey));
System.out.println("加密后密文：" + s);
// String ss = "bPrP3VQpVNj7jxzSvVRQQpOCzg4c9HAMd/Sesda0SOxmWbNzP8SnhayV2H9Jpih2sf26O8dOqiNE7V1u5NPgQBIPi6LqX2QiFTjynVLxQBUmISfmQ2Q6K3sjHBIRIhuZPrXijw7CextUUQwzh4VvEVkjyaUnqlMXVRkUGlgqP7M=";
// String privateKey1 = "MIICeAIBADANBgkqhkiG9w0BAQEFAASCAmIwggJeAgEAAoGBALiJJ6RPMMh-ETrmppOG7JKINPSFaaZoHjzZkyQl3AcfrpKMmH82j_Pxl4mPvvgKtbR20N-88-nJLT4v4aOz9XYVl5ruE59SsJl_T8YqN-i8L8KH8Wptd0_ee7nDhF4-OGEi-o330daFv20eLpboy6nDkWLmLihKC0jEZWK8MLZzAgMBAAECgYAEhO9gmcPjFRtM6vsnX8WJbSaG2oGU3rXm3Zk56Gd0ETWQRzsw2mA6JC-G4etWXcTHb6V75T-_-PpPrJKFFNItEH-WFRS36xneomycxRG1YTfK1SsGLGF0BV3bLVZx8cQz7VsBY4vqbRCSKtcOZBJpnxI6iHAv07i8w34F6qjfsQJBAORnKUuJQ_GsHHBPT1VhMYjXVepAfTrWtCzRQ648KavbHLAGaRIhX10uj-hAhZLafDqQF8Y7T7GHTlasRL9ubWsCQQDO1R3KScJJSR3KDsnSsF0YCw7V28cr_OVAwiPoro90Me6MUz9yKV88gQlTuJkNFMuu_YdPXYKjlzNVg0zFmtUZAkEAoe9mPtDeZD0TmKkSZUVYul1543C_mPTan5_qrWCoZtkd2MtiuWEB3O4DR7ZfPcQ8KcU5pektUn_NEfRndZYUawJBAJfydOoxeawBLQNODfLcYefR59owlYe5SGpktaCw7O596DPqzId_4Vk_qqx4xueXSXOLCabCmcC4yZue0_2vm7ECQQDLrzXL-BpSqxbvtE0gNKcgaSkEUSOh1QmQFPCHERsOBxcflM6ej71STKglB21JD9m6tM2RySgbtUx4TfOuJTek";
// String s1 = privateDecryption(ss, getPrivateKey(privateKey1));
// System.out.println("解密后明文：" + s1);
String s1 = privateDecryption(s, getPrivateKey(privateKey));
System.out.println("解密后明文：" + s1);
} catch (Exception e) {
throw new IllegalArgumentException();